Blanchett, 44, was the favorite to win this year's Oscar
after sweeping awards season with prizes including the Golden
Globe, Screen Actors Guild and BAFTA earlier this year.
Blanchett beat Amy Adams, Sandra Bullock, Judi Dench and Meryl
Streep for the Oscar.
"As random and subjective as this award is, it means a great
deal in a year of, yet again, extraordinary performances by
women," Blanchett said in her acceptance speech.
She added that while there are still some people in the film
business "who are still foolishly clinging to the idea that
female films with women at the center are niche experiences.
They are not. Audiences want to see them, and in fact, they earn
Including "Blue Jasmine," Blanchett has been nominated for an
Oscar six times in a 20-year career that spans stage and film in
Hollywood and Australia and both drama and action.
Blanchett won the best supporting actress statuette in 2005
for her role as Hollywood icon Katharine Hepburn in "The
Aviator." Previous Oscar nominations came from her role as
Britain's Queen Elizabeth I in "Elizabeth" and "Elizabeth: The
[to top of second column]
In "Blue Jasmine," Blanchett's character, Jasmine, loses everything,
including her mind, thanks to her husband's financial and marital
misdeeds and her own hapless ways.
The film is a cautionary tale of what happens when a woman builds
her life around a wealthy husband, unaware of the house of cards in
which she lives.
The film was Blanchett's first with Allen, who is known for creating
memorable female characters like Diane Keaton's Annie Hall.
(Reporting by Nichola Groom and Lisa
Baertlein, editing by Jill Serjeant)
[© 2014 Thomson Reuters. All rights
Copyright 2014 Reuters. All rights reserved. This material may not be published,
broadcast, rewritten or redistributed.